161140146 has 16 divisors (see below), whose sum is σ = 323481600. Its totient is φ = 53513168.

The previous prime is 161140117. The next prime is 161140163. The reversal of 161140146 is 641041161.

It is a super-2 number, since 2×161140146² = 51932293305802632, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48306 + ... + 51533.

It is an arithmetic number, because the mean of its divisors is an integer number (20217600).

Almost surely, 2^161140146 is an apocalyptic number.

161140146 is an abundant number, since it is smaller than the sum of its proper divisors (162341454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161140146 is a wasteful number, since it uses less digits than its factorization.

161140146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100113.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 161140146 is about 12694.0988652208. The cubic root of 161140146 is about 544.1699858957.

The spelling of 161140146 in words is "one hundred sixty-one million, one hundred forty thousand, one hundred forty-six".